The following information shows the result of the orbit fit based on Gary Bernstein's method. Most of the information should be self-explanatory. Take special note that while the original Bernstein software works with barycentric coordinates, we convert these results into a heliocentric coordinate system.
# Object: 15GH56
# Created Sun Dec 22 02:10:20 2024
# Orbit generated from Bernstein formalism
# Fitting 36 observations of 36
# Arc: 2.34y
# First observation: 2015/02/17
# Last observation: 2017/06/22
Preliminary a, adot, b, bdot, g, gdot:
-0.000139 0.014708 0.000023 0.011243 0.021142 0.000000
# Chi-squared of fit: 8.56 DOF: 66 RMS: 0.09
# Min/Max residuals: -0.17 0.25
# Exact a, adot, b, bdot, g, gdot:
1.002342E-05 1.470142E-02 7.856088E-06 1.132302E-02 2.129891E-02 4.702663E-03
# Covariance matrix:
1.7906E-13 -1.1594E-14 -1.7637E-14 8.5508E-14 1.5727E-13 4.1853E-12
-1.1594E-14 1.3868E-13 -1.3705E-14 6.6683E-14 1.0195E-13 3.2645E-12
-1.7637E-14 -1.3705E-14 9.6808E-14 -1.1479E-13 -3.8375E-14 -2.2491E-12
8.5508E-14 6.6683E-14 -1.1479E-13 3.2694E-13 1.8677E-13 1.1032E-11
1.5727E-13 1.0195E-13 -3.8375E-14 1.8677E-13 2.8097E-13 9.1433E-12
4.1853E-12 3.2645E-12 -2.2491E-12 1.1032E-11 9.1433E-12 5.4026E-10
# lat0 lon0 xBary yBary zBary JD0
0.571350 -156.730485 0.807695 0.005776 -0.564259 2457070.986558
# Heliocentric elements and errors
Epoch: 2457070.5000 = 2015/02/17
Mean Anomaly: 82.47118 +/- 0.173
Argument of Peri: 251.64900 +/- 0.097
Long of Asc Node: 201.55571 +/- 0.000
Inclination: 37.41762 +/- 0.001
Eccentricity: 0.23549197 +/- 0.0011
Semi-Major Axis: 46.40232441 +/- 0.0252
Time of Perihelion: 2430621.5938 +/- 51.2
Perihelion: 35.47494978 +/- 0.0535
Aphelion: 57.32969904 +/- 0.0588
Period (y) 316.0951 +/- 0.26
# Ecliptic coordinates at JD0 (AU and AU/d)
Ecliptic X -43.96979546 +/- 0.0011
Ecliptic Y -18.02805860 +/- 0.0004
Ecliptic Z 0.46854342 +/- 0.0000
Ecliptic XDOT 0.00020095 +/- 0.0000
Ecliptic YDOT -0.00197470 +/- 0.0000
Ecliptic ZDOT 0.00146156 +/- 0.0000
# Distances at JD0 (AU)
Heliocenter to KBO 47.52444995 +/- 0.0010
Geocenter to KBO 46.95076453 +/- 0.0012
# Hcoef: 7.43
The following table shows the complete astrometric record for 15GH56. The first three columns show the date of observation. The next six columns are RA and DEC. The next column (when provided) is the observed magnitude and filter. The next column is the object name (15GH56) followed by the observatory code and reference code for the source of the astrometry.
2015 02 17.48578 13 26 58.933 -08 30 37.21 24.3r 15GH56 568 C~2nvR 2015 02 17.52702 13 26 58.833 -08 30 36.43 24.3r 15GH56 568 C~2nvR 2015 02 20.45766 13 26 52.647 -08 29 37.80 24.3r 15GH56 568 C~2nvR 2015 03 17.43316 13 25 39.261 -08 19 17.83 24.2r 15GH56 568 C~2nvR 2015 03 18.45231 13 25 35.619 -08 18 49.03 24.1r 15GH56 568 C~2nvR 2015 03 18.50553 13 25 35.423 -08 18 47.61 24.2r 15GH56 568 C~2nvR 2015 03 20.50715 13 25 28.171 -08 17 49.91 24.0r 15GH56 568 C~2nvR 2015 04 11.39801 13 24 02.383 -08 06 44.70 24.1r 15GH56 568 C~2nvR 2015 04 12.35069 13 23 58.514 -08 06 14.87 24.1r 15GH56 568 C~2nvR 2015 04 12.39167 13 23 58.353 -08 06 13.59 24.3r 15GH56 568 C~2nvR 2015 04 12.43732 13 23 58.164 -08 06 12.10 24.3r 15GH56 568 C~2nvR 2015 04 14.44843 13 23 49.975 -08 05 09.78 23.9r 15GH56 568 C~2nvR 2015 04 16.38638 13 23 42.105 -08 04 09.65 24.0r 15GH56 568 C~2nvR 2015 04 18.40224 13 23 33.943 -08 03 07.24 24.1r 15GH56 568 C~2nvR 2015 04 18.45015 13 23 33.739 -08 03 05.69 24.3r 15GH56 568 C~2nvR 2015 05 16.26602 13 21 49.427 -07 49 40.28 24.1r 15GH56 568 C~2nvR 2015 06 21.32182 13 20 27.384 -07 37 50.72 24.2r 15GH56 568 C~2nvR 2015 06 22.27832 13 20 26.384 -07 37 39.13 24.4r 15GH56 568 C~2nvR 2015 07 12.27234 13 20 21.064 -07 35 12.52 24.2r 15GH56 568 C~2nvR 2015 07 19.26227 13 20 26.425 -07 35 05.30 24.2r 15GH56 568 C~2nvR 2016 02 04.55519 13 31 25.232 -08 16 51.52 24.4w 15GH56 568 C~2nvR 2016 02 10.54313 13 31 18.215 -08 15 20.58 24.4w 15GH56 568 C~2nvR 2016 03 12.48022 13 30 02.820 -08 03 47.80 24.4w 15GH56 568 C~2nvR 2016 04 03.44126 13 28 41.531 -07 53 04.54 24.4w 15GH56 568 C~2nvR 2016 04 09.42106 13 28 17.520 -07 50 00.64 24.5w 15GH56 568 C~2nvR 2016 05 01.35644 13 26 50.120 -07 38 58.47 23.4w 15GH56 568 C~2nvR 2016 05 02.29905 13 26 46.537 -07 38 31.51 24.9w 15GH56 568 C~2nvR 2016 05 06.30882 13 26 31.568 -07 36 37.97 24.4w 15GH56 568 C~2nvR 2016 05 28.27599 13 25 20.693 -07 27 30.69 24.2w 15GH56 568 C~2nvR 2016 05 28.28814 13 25 20.660 -07 27 30.44 24.1w 15GH56 568 C~2nvR 2016 06 04.35749 13 25 03.093 -07 25 08.25 24.3w 15GH56 568 C~2nvR 2016 06 27.28082 13 24 28.799 -07 19 48.61 23.9w 15GH56 568 C~2nvR 2016 07 06.31671 13 24 25.735 -07 18 46.90 24.8w 15GH56 568 C~2nvR 2016 07 07.28338 13 24 25.797 -07 18 42.56 24.5w 15GH56 568 C~2nvR 2017 03 28.56968 13 33 12.958 -07 38 46.87 24.6w 15GH56 568 C~2nvR 2017 06 22.26639 13 28 38.588 -07 03 49.87 24.6w 15GH56 568 C~2nvR
The following table shows the residuals to the orbit fit. The first coumn is the point number. The second column is the time, in years, measured from the first observation. The third and fifth columns are the regularized positions used in the orbit fit. The fourth and sixth columns are the residuals, in arc seconds, for RA and Dec respectively.
1 0.0000 0.00 0.18 0.00 0.11
2 0.0001 -1.67 -0.01 0.18 0.02
3 0.0081 -108.61 -0.07 20.75 0.00
4 0.0765 -1349.68 -0.05 193.92 0.12
5 0.0793 -1410.56 -0.02 200.66 -0.07
6 0.0795 -1413.79 -0.00 200.90 -0.17
7 0.0849 -1535.15 0.06 214.63 -0.04
8 0.1449 -2964.84 0.05 360.17 -0.05
9 0.1475 -3029.27 -0.04 366.54 0.13
10 0.1476 -3031.97 0.08 366.84 0.18
11 0.1477 -3035.13 0.05 367.18 0.25
12 0.1532 -3171.22 -0.06 379.90 -0.03
13 0.1585 -3302.10 -0.09 392.33 -0.08
14 0.1640 -3437.87 0.01 405.25 -0.05
15 0.1642 -3441.26 -0.10 405.56 -0.02
16 0.2403 -5180.11 0.15 576.82 -0.02
17 0.3390 -6577.35 -0.06 780.72 -0.05
18 0.3417 -6595.49 0.00 785.92 -0.04
19 0.3964 -6723.73 -0.04 892.48 0.04
20 0.4155 -6652.40 -0.05 928.95 -0.14
21 0.9639 3370.54 0.04 2222.86 0.07
22 0.9803 3240.24 0.08 2269.24 -0.02
23 1.0650 1944.27 -0.14 2502.35 -0.11
24 1.1251 584.57 0.05 2655.92 -0.05
25 1.1415 185.09 -0.03 2695.35 -0.12
26 1.2016 -1266.80 -0.15 2831.25 0.03
27 1.2041 -1326.26 -0.08 2836.62 -0.12
28 1.2151 -1575.06 0.12 2859.86 0.02
29 1.2753 -2756.97 0.00 2978.36 0.09
30 1.2753 -2757.52 0.01 2978.41 0.08
31 1.2947 -3052.99 0.05 3013.72 0.01
32 1.3574 -3645.52 0.06 3121.56 -0.08
33 1.3822 -3710.78 -0.13 3161.99 -0.06
34 1.3848 -3711.53 0.11 3166.36 0.02
35 2.1084 4023.22 -0.09 4936.37 0.04
36 2.3430 -545.26 0.09 5387.57 0.11
The following table comes from a 10My integration of the orbit of the object. Three columns are shown. The first column is the result of integrating the nominal orbit. The other two columns are based on clones of the nominal orbit that are +/- 3 sigma from the nominal orbit. If all three types agree then the classificiation is deemed secure. The basis for these calculations is described in more detail in AJ, 129, 1117 (2005). Any use made of these calculations should refer to and credit this publication and the Deep Ecliptic Survey Team.
15GH56 quality flag:2 Type: SCATEXTD SCATNEAR SCATEXTD axisobj 46.053 46.123 45.984 ecceobj 0.236 0.238 0.233 incobj 37.589 37.589 37.589 qmin 34.799 34.180 34.832 qmax 58.224 58.986 58.018 amean 46.264 46.322 46.188 amin 45.863 45.918 45.774 amax 46.748 46.873 46.660 emean 0.228 0.240 0.225 emin 0.211 0.222 0.211 emax 0.246 0.260 0.243 imean 37.781 37.629 37.797 imin 37.432 37.224 37.461 imax 38.193 38.064 38.127 excite_mean 0.654 0.656 0.653 fracstop 1.000 1.000 1.000 cjmean 2.559 2.558 2.560 libcent 0 -180.0 -180.0 -180.0 libamp 0 -180.0 -180.0 -180.0 libcent 1 -180.0 -180.0 -180.0 libamp 1 -180.0 -180.0 -180.0 libcent 2 -180.0 -180.0 -180.0 libamp 2 -180.0 -180.0 -180.0 libcent 3 -180.0 -180.0 -180.0 libamp 3 -180.0 -180.0 -180.0 libcent 4 -180.0 -180.0 -180.0 libamp 4 -180.0 -180.0 -180.0 kozaimean 200.8 206.2 203.2 kozaiamp 180.0 179.9 179.9